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Prepaid expenses, deposits and other assets (Details) - CAD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Prepaid Expenses Deposits And Other Assets [Abstract]    
Prepaid expenses $ 1,546 $ 1,150
Deposits and other receivables 1,448 2,098
Prepaid expenses, deposits and other assets $ 2,994 $ 3,248